Jasper Johns: Tautological Paintings

Flag, 1954-55

Target, 1969

Flag above white collage, 1955

Two Flags (in six parts), 1973

Three Flags, 1958

Target, 1974

Concept Art has its roots in Pop Art.

Joseph Kosuth: "And in Jasper
Johns' work  such as his 'Target' and 'Flag' paintings and
his ale cans  one has a particularly good example of art
existing as analytical proposition." ("Art
after Philosophy, part II." Studio International, November
1969, p.161)